Comparison of SSH servers

AnSSH serveris a software program which uses theSecure Shellprotocol to accept connections from remote computers.SFTP/SCPfile transfers and remote terminal connections are popular use cases for an SSH server.

General

Name	Developer	Initial release	Platform	Latest release		License
Name	Developer	Initial release	Platform	Version	Date	License
Apache MINASSHD	Apache Software Foundation	2009	AIX	2.9.0^[1]	2022-07-18	Apache-2.0
			BSD
			Linux
			HP-UX
			Java
			macOS
			Solaris
			Windows
BitviseSSH Server	Bitvise Limited	2001	Windows	9.32^[2]^[3]	2023-12-20	Proprietary^[a]
CopSSH	Itefix	2003-08-12	Cygwin	7.10.1^[4]	2022-06-21	Proprietary
CopSSH	Itefix	2003-08-12	Windows	7.10.1^[4]	2022-06-21	Proprietary
CrushFTP Server	CrushFTP, LLC	2003-01-01	AIX	10.2.0^[5]	2022-04-05	Proprietary^[b]
			BSD
			Cygwin
			Linux
			HP-UX
			Java
			macOS
			Solaris
			Windows
Dropbear	Matt Johnston	2003-04-06^[6]	AIX	2024.86^[7]	2024-10-22	MIT
			Android
			BSD
			Cygwin
			Linux
			HP-UX
			macOS
			Solaris
			webOS
lsh	Niels Möller	1999-05-23^[8]	BSD	2.1^[9]	2013-06-26	GPL-2.0-or-later
			Linux
			Solaris
			macOS
OpenSSH^[c]	TheOpenBSDproject	1999-12-01	AIX	9.9^[10]	2024-09-19	BSD
			AmigaOS
			Android
			BSD
			Cygwin
			Linux
			HP-UX
			iOS
			macOS
			OpenVMS
			Solaris
			webOS
			Windows
			z/OS
Teleport	Gravitational	2016-06-23		17.2.1^[11]	2025-01-23	Apache-2.0
wolfSSH	wolfSSL	2016-07-20	BSD	1.4.19^[12]	2024-11-01	GPL-3.0-or-later^[d]
			Cygwin
			Linux
			macOS
			Solaris
			Windows

^No costfor non-commercial use.
^Shareware.
^Also known as OpenBSD Secure Shell.
^Also available under a proprietary license.

Platform

Theoperating systemsorvirtual machinesthe SSH servers are designed to run on withoutemulation;there are several possibilities:

Noindicates that it does not exist or was never released.
Partialindicates that while it works, the server lacks important functionality compared to versions for other OSs but may still be under development.
Betaindicates that while a version is fully functional and has been released, it is still in development (e.g. for stability).
Yesindicates that it has been officially released in a fully functional, stable version.
Droppedindicates that while the server works, new versions are no longer being released for the indicated OS; the number in parentheses is the last known stable version which was officially released for that OS.
Includedindicates that the server comes pre-packaged with or has been integrated into the operating system.

The list is not exhaustive, but rather reflects the most common platforms today.

Name	macOS	Windows	Cygwin	BSD	Linux	Solaris	Java	OpenVMS	z/OS	AmigaOS	AIX	HP-UX	iOS^[a]	webOS	Android
Apache MINASSHD	Yes	Yes	No	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	No	No	No
BitviseSSH Server	No	Yes	No	No	No	No	No	No	No	No	No	No	No	No	No
CopSSH	No	Yes	Yes	No	No	No	No	No	No	No	No	No	No	No	No
CrushFTP Server	Yes	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	Yes	Yes	No	No	No
Dropbear	Yes	No	Yes	Yes	Yes	Yes	No	No	No	No	Yes	Yes	No	Yes^[b]	Yes
lsh	Yes	No	No	Partial^[c]	Yes	Yes	No	No	No	No	No	No	No	No	??
OpenSSH^[d]	Included	Optional^[e]	Included	Included	Included^[f]	Yes	No	Yes	Yes	Yes	Yes^[g]	Included	Yes^[h]	Yes^[b]	Partial
wolfSSH	Yes	Yes	Yes	Yes	Yes	Yes	No	No	No	No	No	No	No	No	No

^iPhone,iPod Touch.Unless otherwise noted, iPhone refers to non-jailbrokendevices.
^^a ^bOpenSSH and Dropbear are available as optware packages installed by PreWare (maintained by WebOS Internals).
^Lsh supports only one BSD platform officially,FreeBSD.^{[citation needed]}
^Also known as OpenBSD Secure Shell.
^Native OpenSSH for Windows 10 is an optional feature that can be installed. OpenSSH can be installed in windows from windows 10 version 1709 and up. The project is called Win32-OpenSSH (contains 64bit as well), hosted on GitHub.^[13]
^MostLinux distributionshave OpenSSH as an official package, but a few do not.
^OpenSSH 3.4 was the first release included sinceAIX.^[14]
^Only forjailbrokendevices.

Features

Name	SSH1	SSH2	Port forwarding	SFTP	SCP	IPv6	OpenSSH authorized keys	Privilege separation	FIPS 140-2
Apache MINASSHD	No	Yes	Yes	Yes	Yes	Yes	Yes	No	?
BitviseSSH Server	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
CopSSH	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes^[15]	?
CrushFTP Server	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	?
Dropbear	No	Yes	Yes	Partial	Yes	Yes	Yes	No	?
Lsh	No	Yes	Yes	Yes	Yes	?	?	?	?
OpenSSH^[a]	No^[16]	Yes	Yes	Yes	Yes	Yes	Yes	Yes^[15]	Yes^[b]
wolfSSH	No	Yes	Yes	Yes	Yes	Yes	Yes	No	Yes

^Also known as OpenBSD Secure Shell.
^OpenSSH server can be built with FIPS 140-2.^[17]

References

^"Apache MINA SSHD".GitHub.5 December 2021.
^"Bitvise SSH Client Version History".20 December 2023.
^"Bitvise SSH Server Version History".20 December 2023.
^"Copssh update - 7.10.1".itefix.net.
^"CrushFTP - Download".Archived fromthe originalon 21 April 2022.
^"Changes in Dropbear in official web page".
^"Dropbear 2024.86".22 October 2024.Retrieved4 January2025.
^"Listing of /~nisse/archive/".liu.se.
^"LSH-2.1 release".26 June 2013.
^"release-9.9".Retrieved20 September2024.
^"Release 17.2.1".23 January 2025.Retrieved30 January2025.
^"Release 1.4.19".1 November 2024.Retrieved29 November2024.
^"Win32-OpenSSH".GitHub.11 June 2022.
^"OpenSSH is now bundled with AIX".IBM.Archived fromthe originalon 2009-12-13.
^^a ^b"sshd_config(5)".Retrieved2016-05-18.
^"OpenSSH 7.5 Release notes, SSHv1 server no longer supported".Retrieved2017-07-09.
^"FIPS-140".

[4] No costfor non-commercial use.

[7] Shareware.

[openssh-aka-12] Also known as OpenBSD Secure Shell.

[16] Also available under a proprietary license.

[iphone-17] Phone,iPod Touch.Unless otherwise noted, iPhone refers to non-jailbrokendevices.

[sshwebos-18] OpenSSH and Dropbear are available as optware packages installed by PreWare (maintained by WebOS Internals).

[freebsdonly-19] Lsh supports only one BSD platform officially,FreeBSD.^{[citation needed]}

[openssh-aka-20] Also known as OpenBSD Secure Shell.

[win32-openssh-22] Native OpenSSH for Windows 10 is an optional feature that can be installed. OpenSSH can be installed in windows from windows 10 version 1709 and up. The project is called Win32-OpenSSH (contains 64bit as well), hosted on GitHub.^[13]

[opensshlinux-23] MostLinux distributionshave OpenSSH as an official package, but a few do not.

[opensshaix-25] OpenSSH 3.4 was the first release included sinceAIX.^[14]

[opensshiphone-26] Only forjailbrokendevices.

[openssh-aka-28] Also known as OpenBSD Secure Shell.

[fips-31] OpenSSH server can be built with FIPS 140-2.^[17]

[1] "Apache MINA SSHD".GitHub.5 December 2021.

[wikidata-a7e9f9e5bed8b583ffe58ac1d67a5ba36df17557-v18-2] "Bitvise SSH Client Version History".20 December 2023.

[wikidata-0e7576b29f933f45de29349b748e10e994af5f3d-v18-3] "Bitvise SSH Server Version History".20 December 2023.

[5] "Copssh update - 7.10.1".itefix.net.

[wikidata-646275978ef0437c86031bf70f3adc990b48f001-v18-6] "CrushFTP - Download".Archived fromthe originalon 21 April 2022.

[8] "Changes in Dropbear in official web page".

[wikidata-23ad79c9d5c9eada3e4a83e918ccafa5d44e23a3-v18-9] "Dropbear 2024.86".22 October 2024.Retrieved4 January2025.

[10] "Listing of /~nisse/archive/".liu.se.

[wikidata-f54b3e6f747427840ef9df80c898ca60b8e23ade-v18-11] "LSH-2.1 release".26 June 2013.

[wikidata-6e3cd3a869b7ae0eb04dd5887082c8cadcf4831f-v18-13] "release-9.9".Retrieved20 September2024.

[wikidata-ae4e432b9d7c4ef4b214f33f876feedf4b424241-v18-14] "Release 17.2.1".23 January 2025.Retrieved30 January2025.

[wikidata-73d186c1a7fec86815806fcc6177c96ef2164aec-v18-15] "Release 1.4.19".1 November 2024.Retrieved29 November2024.

[21] "Win32-OpenSSH".GitHub.11 June 2022.

[24] "OpenSSH is now bundled with AIX".IBM.Archived fromthe originalon 2009-12-13.

[auto-27] "sshd_config(5)".Retrieved2016-05-18.

[29] "OpenSSH 7.5 Release notes, SSHv1 server no longer supported".Retrieved2017-07-09.

[30] "FIPS-140".

[1]

[2]

[3]

[a]

[4]

[5]

[b]

[6]

[7]

[8]

[9]

[c]

[10]

[11]

[12]

[d]

[a]

[b]

[c]

[d]

[e]

[f]

[g]

[h]

[13]

[14]

[15]

[a]

[16]

[b]

[17]

Comparison of SSH servers

Contents

General

Platform

Features

See also

References